//
// Buttons
// --------------------------------------------------


// Base styles
// --------------------------------------------------

.btn {
  display: inline-block;
  margin-bottom: 0; // For input.btn
  font-weight: @btn-font-weight;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
  border: 1px solid transparent;
  white-space: nowrap;
  .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @border-radius-base);
  .user-select(none);

  &,
  &:active,
  &.active {
	&:focus {
	  .tab-focus();
	}
  }

  &:hover,
  &:focus {
	color: @btn-default-color;
	text-decoration: none;
  }

  &:active,
  &.active {
	outline: 0;
	background-image: none;
	.box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
  }

  &.disabled,
  &[disabled],
  fieldset[disabled] & {
	cursor: not-allowed;
	pointer-events: none; // Future-proof disabling of clicks
	.opacity(.65);
	.box-shadow(none);
  }
}


// Alternate buttons
// --------------------------------------------------


.btn-variant(default, @btn-default-color, @btn-default-bg, @btn-default-border);

.btn-variant(primary, @btn-primary-color, @btn-primary-bg);
// Success appears as green
.btn-variant(success, @btn-success-color, @btn-success-bg);
// Info appears as blue-green
.btn-variant(info, @btn-info-color, @btn-info-bg);
// Warning appears as orange
.btn-variant(warning, @btn-warning-color, @btn-warning-bg);
// Danger and error appear as red
.btn-variant(danger, @btn-danger-color, @btn-danger-bg);


// Link buttons
// -------------------------

// Make a button look and behave like a link
.btn-link {
  color: @link-color;
  font-weight: normal;
  cursor: pointer;
  border-radius: 0;

  &,
  &:active,
  &[disabled],
  fieldset[disabled] & {
	background-color: transparent;
	.box-shadow(none);
  }
  &,
  &:hover,
  &:focus,
  &:active {
	border-color: transparent;
  }
  &:hover,
  &:focus {
	color: @link-hover-color;
	text-decoration: underline;
	background-color: transparent;
  }
  &[disabled],
  fieldset[disabled] & {
	&:hover,
	&:focus {
	  color: @btn-link-disabled-color;
	  text-decoration: none;
	}
  }
}


// Button Sizes
// --------------------------------------------------

.btn-lg {
  // line-height: ensure even-numbered height of button next to large input
  .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
}
.btn-sm {
  // line-height: ensure proper height of button next to small input
  .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
}
.btn-xs {
  .button-size(@padding-xs-vertical; @padding-xs-horizontal; @font-size-small; @line-height-small; @border-radius-small);
}


// Block button
// --------------------------------------------------

.btn-block {
  display: block;
  width: 100%;
  padding-left: 0;
  padding-right: 0;
}

// Vertically space out multiple block buttons
.btn-block + .btn-block {
  margin-top: 5px;
}

// Specificity overrides
input[type="submit"],
input[type="reset"],
input[type="button"] {
  &.btn-block {
	width: 100%;
  }
}
